The timing steps of this circuit are indicated by a 7-segment display. The circuit was found in documentation from the 90s. The capacitor next to the 555 determines the timing steges.
This capacimeter was obtained in European documentation from the 1980s. The indicator instrument, a...
This circuit for the logic control of the 555 in a power supply was found in the October 1989...
This configuration with the LM111 was found in your factory manual. The circuit can be implemented with...